18781335

素因数分解:

$3^3\times 5^1\times {\mathrm{139121}}^1$

素因数の和:139135

約数の個数: 16

約数和(自身を含む): 33389280

約数和(自身を除く): 14607945

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139121, 417363, 695605, 1252089, 2086815, 3756267, 6260445, 18781335]

約数ペア:

[(1, 18781335), (3, 6260445), (5, 3756267), (9, 2086815), (15, 1252089), (27, 695605), (45, 417363), (135, 139121)]